Cita APA (7a ed.)

Bonner, J., & Head, J. J. (1980). The world´s people and the world´s food supply. Carolina Biological Supply, Scientific Publications Department.

Cita Chicago Style (17a ed.)

Bonner, James, y J. J. Head. The World´s People and the World´s Food Supply. Burlington, N.C.: Carolina Biological Supply, Scientific Publications Department, 1980.

Cita MLA (8a ed.)

Bonner, James, y J. J. Head. The World´s People and the World´s Food Supply. Carolina Biological Supply, Scientific Publications Department, 1980.